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| Rev | Author | Line No. | Line | 
|---|---|---|---|
| 86 | f9daq | 1 | //**************************************************************************** | 
        
| 2 | // Copyright (C) 2000-2006  ARW Elektronik Germany | 
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| 3 | // | 
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| 4 | // | 
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| 5 | // This program is free software; you can redistribute it and/or modify | 
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| 6 | // it under the terms of the GNU General Public License as published by | 
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| 7 | // the Free Software Foundation; either version 2 of the License, or | 
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| 8 | // (at your option) any later version. | 
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| 9 | // | 
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| 10 | // This program is distributed in the hope that it will be useful, | 
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| 11 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | 
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| 12 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the | 
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| 13 | // GNU General Public License for more details. | 
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| 14 | // | 
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| 15 | // You should have received a copy of the GNU General Public License | 
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| 16 | // along with this program; if not, write to the Free Software | 
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| 17 | // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | 
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| 18 | // | 
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| 19 | // This product is not authorized for use as critical component in  | 
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| 20 | // life support systems without the express written approval of  | 
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| 21 | // ARW Elektronik Germany. | 
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| 22 | //   | 
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| 23 | // Please announce changes and hints to ARW Elektronik | 
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| 24 | // | 
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| 25 | // Maintainer(s): Klaus Hitschler (klaus.hitschler@gmx.de) | 
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| 26 | // | 
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| 27 | //**************************************************************************** | 
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| 28 | |||
| 29 | //**************************************************************************** | 
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| 30 | // Revision 1.20 support for kernel version=3.13.0-37-generic 2014/10/19  Rok Pestotnik | 
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| 31 | // fops.c -- the file operations module for the PCICC32 PCI to CAMAC Interface | 
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| 32 | // | 
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| 33 | // $Log: fops.c,v $ | 
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| 34 | // Revision 1.19  2006/06/04 12:26:07  klaus | 
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| 35 | // release_20060604; Version 6.9; pci_{en|dis}able_device() added; remap_page_range reorganized | 
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| 36 | // | 
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| 37 | // Revision 1.18  2006/03/28 21:49:49  klaus | 
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| 38 | // release_20060328; Version 6.8; Support for AMD64 and Kernel 2.6.15 | 
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| 39 | // | 
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| 40 | // Revision 1.17  2005/03/11 13:23:26  klaus | 
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| 41 | // simple corrections for to use with kernels 2.4.21 | 
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| 42 | // | 
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| 43 | // Revision 1.16  2004/08/12 19:59:19  klaus | 
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| 44 | // conversion to kernel-version 2.6, released version 6.0 | 
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| 45 | // | 
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| 46 | // Revision 1.15  2004/01/16 18:40:34  klaus | 
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| 47 | // converted remap_page_range call for kernels >= 2.4.20, contributed by Roberto Bertoni | 
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| 48 | // | 
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| 49 | // Revision 1.14  2003/12/04 20:34:49  klaus | 
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| 50 | // minor change: restore the hardware set intCSR content at release of path, release of version 5.2 | 
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| 51 | // | 
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| 52 | // Revision 1.13  2003/06/19 08:23:38  klaus | 
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| 53 | // re-compiled with RH-7.2 (kernel 2.4.10) | 
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| 54 | // | 
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| 55 | // Revision 1.12  2003/05/11 11:12:03  klaus | 
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| 56 | // matched to kernel 2.4 PCI handling, debug messages improved | 
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| 57 | // | 
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| 58 | // Revision 1.11  2002/10/08 18:01:46  klaus | 
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| 59 | // corrections mainly for use with kernel 2.2.19 | 
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| 60 | // | 
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| 61 | // Revision 1.10  2002/08/06 19:06:50  klaus | 
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| 62 | // Small changes | 
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| 63 | // | 
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| 64 | // Revision 1.9  2002/04/17 19:41:06  klaus | 
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| 65 | // added support for autoread | 
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| 66 | // | 
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| 67 | // Revision 1.8  2002/04/17 18:57:33  klaus | 
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| 68 | // last changes to release 4.4 | 
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| 69 | // | 
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| 70 | // Revision 1.7  2002/04/14 18:25:38  klaus | 
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| 71 | // added interrupt handling, driver 4.4. ...3.5.tar.gz | 
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| 72 | // | 
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| 73 | // Revision 1.6  2001/11/20 21:29:24  klaus | 
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| 74 | // Small changes to correct versioning down to kernel 2.3 | 
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| 75 | // | 
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| 76 | // Revision 1.5  2001/11/20 20:25:23  klaus | 
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| 77 | // inserted versioning for kernel 2.4 | 
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| 78 | // | 
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| 79 | // Revision 1.4  2001/11/20 20:12:50  klaus | 
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| 80 | // included new header and CVS log | 
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| 81 | // | 
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| 82 | // first steps (on my mothers birthday)                        AR   23.02.2000 | 
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| 83 | // MAKE_CC32_ADR serves only F from 0..15                      AR   24.04.2000 | 
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| 84 | // MODVERSIONS included                                        AR   24.04.2000 | 
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| 85 | //    | 
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| 86 | //**************************************************************************** | 
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| 87 | |||
| 88 | /*--- INCLUDES -----------------------------------------------------------------------------------*/ | 
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| 89 | #include "common.h"  /* must be the first include */ | 
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| 90 | |||
| 91 | #include <linux/kernel.h> /* printk() */ | 
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| 92 | #include <linux/mm.h> | 
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| 93 | #include <linux/module.h> /* MODULE_AUTHOR and MAJOR ... */ | 
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| 94 | #include <linux/pci.h> | 
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| 95 | #include <asm/errno.h> | 
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| 96 | #include <asm/types.h> | 
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| 97 | #include <asm/uaccess.h> | 
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| 98 | #include <linux/sched.h> | 
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| 99 | #include <linux/wait.h> | 
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| 100 | #include <linux/poll.h> | 
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| 101 | |||
| 102 | #include "fops.h" | 
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| 103 | #include "list.h" | 
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| 104 | #include "plx9050.h" | 
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| 105 | #include "pcicc32.h"      /* the common ioctl commands and structures between driver and application */ | 
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| 106 | |||
| 107 | /*--- DEFINES ------------------------------------------------------------------------------------*/ | 
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| 108 | MODULE_AUTHOR("klaus.hitschler@gmx.de");  | 
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| 109 | MODULE_DESCRIPTION("Driver for ARW Elektronik PCI CAMAC interface.");  | 
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| 110 | MODULE_SUPPORTED_DEVICE("PCICC32");  | 
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| 111 | |||
| 112 | #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,10) | 
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| 113 | MODULE_LICENSE("GPL"); // since 2.4.?  | 
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| 114 | #endif | 
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| 115 | |||
| 116 | #ifndef MINOR | 
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| 117 | #define MINOR(x) minor(x)            // since 2.5.? | 
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| 118 | #endif | 
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| 119 | |||
| 120 | #define MAKE_CC32_ADR(N, A, F) (u16)((N << 10) + (A << 6) + ((F & 0xf) << 2)) | 
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| 121 | |||
| 122 | #define ENABLE_PCIADA_IRQS  (u16)0x0049 /* enable PCIADA IRQs            */ | 
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| 123 | #define DISABLE_PCIADA_IRQS (u16)0x0009 /* disable PCIADA IRQs           */ | 
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| 124 | |||
| 125 | /*--- EXTERNALS ----------------------------------------------------------------------------------*/ | 
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| 126 | extern int get_module_info(CC32_DESCRIPTOR *wd, u8 *cModuleNumber, u8 *cFPGAVersion);  | 
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| 127 | extern int test_connection(CC32_DESCRIPTOR *wd);  | 
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| 128 | extern List *pcicc32_work_device_header;  | 
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| 129 | |||
| 130 | /*--- TYPEDEFS -----------------------------------------------------------------------------------*/ | 
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| 131 | typedef struct  | 
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| 132 | { | 
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| 133 | CC32_DESCRIPTOR *desc; /* pointer to my PCIADA & CC32 */  | 
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| 134 | } PRIVATE_DATA;  | 
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| 135 | |||
| 136 | /*--- FUNCTIONS ----------------------------------------------------------------------------------*/ | 
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| 137 | static void switch_CC32_on(CC32_DESCRIPTOR *desc)  | 
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| 138 | { | 
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| 139 |         u16 cntrl; | 
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| 140 | |||
| 141 | DPRINTK(KERN_DEBUG "pcicc32 : switch_CC32_on()\n");  | 
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| 142 | |||
| 143 | cntrl = readw(desc->pLCR + PLX9050_CNTRL); /* read CONTROL register */  | 
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| 144 | cntrl |= 0x0180;  | 
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| 145 | writew(cntrl, desc->pLCR + PLX9050_CNTRL); /* enable access */  | 
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| 146 | } | 
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| 147 | |||
| 148 | static void switch_CC32_off(CC32_DESCRIPTOR *desc)  | 
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| 149 | { | 
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| 150 | u16 cntrl = readw(desc->pLCR + PLX9050_CNTRL); /* read CONTROL register */  | 
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| 151 | |||
| 152 | DPRINTK(KERN_DEBUG "pcicc32 : switch_CC32_off()\n");  | 
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| 153 | |||
| 154 | writew(DISABLE_PCIADA_IRQS, desc->pLCR + PLX9050_INTCSR); /* disable global interrupts */  | 
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| 155 | cntrl &= ~0x0100;  | 
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| 156 | writew(cntrl, desc->pLCR + PLX9050_CNTRL); /* disable access */  | 
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| 157 | } | 
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| 158 | |||
| 159 | int pcicc32_ioctl(struct inode *pInode, struct file *pFile, unsigned int cmd, unsigned long arg)  | 
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| 160 | { | 
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| 161 |         u16 cntrl; | 
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| 162 | PRIVATE_DATA *pd = (PRIVATE_DATA *)pFile->private_data;  | 
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| 163 | CC32_DESCRIPTOR *wd = pd->desc;  | 
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| 164 | |||
| 165 | DPRINTK(KERN_DEBUG "pcicc32 : pcicc32_ioctl(0x%08x, 0x%08lx)\n", cmd, arg);  | 
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| 166 | |||
| 167 | if (_IOC_TYPE(cmd) != PCICC32_MAGIC)  | 
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| 168 | return -EINVAL;  | 
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| 169 | |||
| 170 | switch(_IOC_NR(cmd))  | 
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| 171 |         { | 
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| 172 | case 1: // PCICC32_IOSTATE  | 
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| 173 |                   { | 
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| 174 | PCICC32_STATUS *ptr = (PCICC32_STATUS *)arg; /* makes it simple */  | 
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| 175 | |||
| 176 | if (_IOC_SIZE(cmd) < sizeof(PCICC32_STATUS))  | 
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| 177 | return -EINVAL;  | 
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| 178 | if (!access_ok(VERIFY_WRITE, ptr, sizeof(*ptr)))  | 
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| 179 | return -EFAULT;  | 
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| 180 | |||
| 181 | ptr->bConnected = ((wd->bConnected) && (readw(wd->pLCR + PLX9050_CNTRL) & 0x0800)) ? 1 : 0;  | 
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| 182 | ptr->bFail = (readw(wd->pLCR + PLX9050_INTCSR) & 0x0020) ? 1 : 0;  | 
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| 183 | ptr->bIrq = (readw(wd->pLCR + PLX9050_INTCSR) & 0x0004) ? 1 : 0;  | 
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| 184 | |||
| 185 | wd->wIrqStatus = 0; // clear the status since it is read  | 
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| 186 |                         } | 
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| 187 | break;  | 
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| 188 | case 2: // PCICC32_IOCNTRL  | 
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| 189 |                   { | 
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| 190 | if (_IOC_SIZE(cmd))  | 
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| 191 | return -EINVAL;  | 
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| 192 | |||
| 193 | cntrl = readw(wd->pLCR + PLX9050_CNTRL); /* read CONTROL register */  | 
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| 194 | writew(cntrl & ~0x0100, wd->pLCR + PLX9050_CNTRL); /* clear USRIO2 */  | 
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| 195 | writew(cntrl , wd->pLCR + PLX9050_CNTRL); /* restore it */  | 
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| 196 |                         } | 
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| 197 | break;  | 
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| 198 | case 3: // PCICC32_CONTROL_INTERRUPTS  | 
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| 199 |             { | 
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| 200 | PCICC32_IRQ_CONTROL *ptr = (PCICC32_IRQ_CONTROL *)arg; /* makes it simple */  | 
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| 201 | char bEnable = (readw(wd->pLCR + PLX9050_INTCSR) & 0x40) ? 1 : 0;  | 
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| 202 | |||
| 203 | if (_IOC_SIZE(cmd) < sizeof(PCICC32_IRQ_CONTROL))  | 
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| 204 | return -EINVAL;  | 
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| 205 | if (!access_ok(VERIFY_WRITE, ptr, sizeof(*ptr)))  | 
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| 206 | return -EFAULT;  | 
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| 207 | |||
| 208 | DPRINTK(KERN_DEBUG "pcicc32 : Interrupt enable = %d\n", ptr->bEnable);  | 
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| 209 | |||
| 210 | if (ptr->bEnable)  | 
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| 211 | writew(ENABLE_PCIADA_IRQS ,wd->pLCR + PLX9050_INTCSR); // local and global enable  | 
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| 212 |                     else | 
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| 213 | writew(DISABLE_PCIADA_IRQS ,wd->pLCR + PLX9050_INTCSR); // global disable  | 
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| 214 | |||
| 215 |                     // return last interrupt enable status   | 
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| 216 | ptr->bEnable = bEnable;  | 
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| 217 |             } | 
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| 218 | break;  | 
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| 219 | case 4: // PCICC32_IOSTATE_BLOCKING  | 
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| 220 |             { | 
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| 221 | PCICC32_STATUS *ptr = (PCICC32_STATUS *)arg; /* makes it simple */  | 
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| 222 | int err;  | 
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| 223 | |||
| 224 | if (_IOC_SIZE(cmd) < sizeof(PCICC32_STATUS))  | 
        ||
| 225 | return -EINVAL;  | 
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| 226 | |||
| 227 |         // support nonblocking read if requested | 
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| 228 | if ((pFile->f_flags & O_NONBLOCK) && (!wd->wIrqStatus))  | 
        ||
| 229 | return -EAGAIN;  | 
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| 230 | |||
| 231 |         // sleep until data are available | 
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| 232 | if ((err = wait_event_interruptible(wd->event_queue, (wd->wIrqStatus))))  | 
        ||
| 233 | return err;  | 
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| 234 | |||
| 235 | if (!access_ok(VERIFY_WRITE, ptr, sizeof(*ptr)))  | 
        ||
| 236 | return -EFAULT;  | 
        ||
| 237 | |||
| 238 | ptr->bConnected = ((wd->bConnected) && (readw(wd->pLCR + PLX9050_CNTRL) & 0x0800)) ? 1 : 0;  | 
        ||
| 239 | ptr->bFail = (readw(wd->pLCR + PLX9050_INTCSR) & 0x0020) ? 1 : 0;  | 
        ||
| 240 | ptr->bIrq = (readw(wd->pLCR + PLX9050_INTCSR) & 0x0004) ? 1 : 0;  | 
        ||
| 241 | |||
| 242 | wd->wIrqStatus = 0; // clear the status since it is read  | 
        ||
| 243 |             } | 
        ||
| 244 | break;  | 
        ||
| 245 | case 5: // PCICC32_AUTOREAD_SWITCH  | 
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| 246 |             { | 
        ||
| 247 | u16 ctrl, erg;  | 
        ||
| 248 | |||
| 249 | PCICC32_AUTOREAD *ptr = (PCICC32_AUTOREAD *)arg; /* makes it simple */  | 
        ||
| 250 | |||
| 251 | if (_IOC_SIZE(cmd) < sizeof(PCICC32_AUTOREAD))  | 
        ||
| 252 | return -EINVAL;  | 
        ||
| 253 | |||
| 254 | if (!access_ok(VERIFY_WRITE, ptr, sizeof(*ptr)))  | 
        ||
| 255 | return -EFAULT;  | 
        ||
| 256 | |||
| 257 | ctrl = readw(wd->pLCR + PLX9050_CNTRL);  | 
        ||
| 258 | if (ptr->bOn)  | 
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| 259 |                           { | 
        ||
| 260 | erg = ctrl & ~0x0004;  | 
        ||
| 261 | erg |= 0x0002; // switch output to 1, pin to 0 = on  | 
        ||
| 262 | writew(erg, wd->pLCR + PLX9050_CNTRL);  | 
        ||
| 263 |                           } | 
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| 264 |                           else | 
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| 265 |                           { | 
        ||
| 266 | erg = ctrl | 0x0006; // switch output = 1, pin to 1 = off  | 
        ||
| 267 | writew(erg, wd->pLCR + PLX9050_CNTRL);  | 
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| 268 |                           } | 
        ||
| 269 | |||
| 270 |                                 // respond the last state | 
        ||
| 271 | ptr->bOn = (ctrl & 0x0004) ? 0 : 1;  | 
        ||
| 272 |             } | 
        ||
| 273 | break;  | 
        ||
| 274 | |||
| 275 | default:  | 
        ||
| 276 | return -EINVAL;  | 
        ||
| 277 |         } | 
        ||
| 278 | |||
| 279 | return 0;  | 
        ||
| 280 | } | 
        ||
| 281 | |||
| 282 | |||
| 283 | static long pcicc32_unlocked_ioctl(struct file *pFile, unsigned int cmd, unsigned long arg){  | 
        ||
| 284 | long retval=0;  | 
        ||
| 285 | |||
| 286 | |||
| 287 | #if HAVE_UNLOCKED_IOCTL | 
        ||
| 288 | struct mutex fs_mutex;  | 
        ||
| 289 | mutex_init(&fs_mutex);  | 
        ||
| 290 | mutex_lock(&fs_mutex);  | 
        ||
| 291 | #else | 
        ||
| 292 | lock_kernel();  | 
        ||
| 293 | #endif | 
        ||
| 294 | |||
| 295 | DPRINTK(KERN_DEBUG "%s : pcicc32_unlocked_ioctl(0x%08x), size = %d\n", DEVICE_NAME, cmd, _IOC_SIZE(cmd));  | 
        ||
| 296 | retval = pcicc32_ioctl(NULL, pFile, cmd,arg);  | 
        ||
| 297 | |||
| 298 | #if HAVE_UNLOCKED_IOCTL | 
        ||
| 299 | mutex_unlock(&fs_mutex);  | 
        ||
| 300 | #else | 
        ||
| 301 | unlock_kernel();  | 
        ||
| 302 | #endif | 
        ||
| 303 | |||
| 304 | return retval;  | 
        ||
| 305 | } | 
        ||
| 306 | |||
| 307 | int pcicc32_mmap(struct file *pFile, struct vm_area_struct *vma)  | 
        ||
| 308 | { | 
        ||
| 309 | PRIVATE_DATA *pd = (PRIVATE_DATA *)pFile->private_data;  | 
        ||
| 310 | |||
| 311 | DPRINTK(KERN_DEBUG "pcicc32 : pcicc32_mmap()\n");  | 
        ||
| 312 | |||
| 313 | if (pd->desc->pPch->desc[3].type == PCI_BASE_ADDRESS_MEM_TYPE_1M)  | 
        ||
| 314 |         { | 
        ||
| 315 | DPRINTK(KERN_DEBUG "pcicc32 : mmap(address=%p size=%d)\n",  | 
        ||
| 316 | virt_to_phys((void *)pd->desc->pUsr), pd->desc->pPch->desc[3].size);  | 
        ||
| 317 | |||
| 318 | if (pcicc32_remap_page_range(vma, vma->vm_start,  | 
        ||
| 319 | virt_to_phys((void *)pd->desc->pUsr), pd->desc->pPch->desc[3].size, PAGE_SHARED))  | 
        ||
| 320 | return -EAGAIN;  | 
        ||
| 321 |         } | 
        ||
| 322 |         else | 
        ||
| 323 |         { | 
        ||
| 324 | DPRINTK(KERN_DEBUG "pcicc32 : mmap(address=%p size=%d)\n",  | 
        ||
| 325 | virt_to_phys((void *)pd->desc->pUsr), pd->desc->pPch->desc[3].size);  | 
        ||
| 326 | |||
| 327 | if (pcicc32_remap_page_range(vma, vma->vm_start,  | 
        ||
| 328 | pd->desc->pPch->desc[3].base_address, pd->desc->pPch->desc[3].size, PAGE_SHARED))  | 
        ||
| 329 | return -EAGAIN;  | 
        ||
| 330 |         } | 
        ||
| 331 | |||
| 332 | return 0;  | 
        ||
| 333 | } | 
        ||
| 334 | |||
| 335 | |||
| 336 | |||
| 337 | int pcicc32_open(struct inode *pInode, struct file *pFile)  | 
        ||
| 338 | { | 
        ||
| 339 | CC32_DESCRIPTOR *wd = 0;  | 
        ||
| 340 | CC32_DESCRIPTOR *desc = 0;  | 
        ||
| 341 | int i;  | 
        ||
| 342 | Node *n;  | 
        ||
| 343 | int nMinor = MINOR(pInode->i_rdev);  | 
        ||
| 344 | PRIVATE_DATA *pd;  | 
        ||
| 345 | |||
| 346 | DPRINTK(KERN_DEBUG "pcicc32 : pcicc32_open(), Major=%d, Minor=%d\n", MAJOR(pInode->i_rdev), nMinor);  | 
        ||
| 347 | |||
| 348 |         /* search for device */ | 
        ||
| 349 | i = getNumOfNodesInList(pcicc32_work_device_header);  | 
        ||
| 350 | n = getFirstNode(pcicc32_work_device_header);  | 
        ||
| 351 | |||
| 352 | DPRINTK(KERN_DEBUG "pcicc32 : scanning %d devices\n", i);  | 
        ||
| 353 | while (i--)  | 
        ||
| 354 |         { | 
        ||
| 355 | wd = (CC32_DESCRIPTOR *)getContent(n);  | 
        ||
| 356 | |||
| 357 | wd->bConnected = get_module_info(wd, &wd->cModuleNumber, &wd->cFPGAVersion);  | 
        ||
| 358 | if (wd->bConnected)  | 
        ||
| 359 |                 { | 
        ||
| 360 | if (test_connection(wd))  | 
        ||
| 361 |                         { | 
        ||
| 362 | printk(KERN_ERR "pcicc32 : connection test for module %d failed!\n", wd->cModuleNumber);  | 
        ||
| 363 | wd->bConnected = 0;  | 
        ||
| 364 |                         } | 
        ||
| 365 |                         else | 
        ||
| 366 | if (wd->cModuleNumber == nMinor)  | 
        ||
| 367 |                                 { | 
        ||
| 368 | desc = wd;  | 
        ||
| 369 | break;  | 
        ||
| 370 |                                 } | 
        ||
| 371 |                 } | 
        ||
| 372 |                 else | 
        ||
| 373 |                 { | 
        ||
| 374 | DPRINTK(KERN_DEBUG "pcicc32 : module %d not connected!\n", nMinor);  | 
        ||
| 375 |                 } | 
        ||
| 376 | |||
| 377 | n = getNextNode(n);  | 
        ||
| 378 |         } | 
        ||
| 379 | |||
| 380 | if (desc)  | 
        ||
| 381 |         { | 
        ||
| 382 | pFile->private_data = (void *)kmalloc(sizeof(PRIVATE_DATA), GFP_ATOMIC);  | 
        ||
| 383 | if (!pFile->private_data)  | 
        ||
| 384 | return -ENOMEM;  | 
        ||
| 385 | |||
| 386 | pd = (PRIVATE_DATA *)pFile->private_data;  | 
        ||
| 387 | pd->desc = wd;  | 
        ||
| 388 | |||
| 389 | DPRINTK(KERN_DEBUG "pcicc32 : found CC32 module with number %d.\n", nMinor);  | 
        ||
| 390 |         } | 
        ||
| 391 |         else | 
        ||
| 392 |         { | 
        ||
| 393 | DPRINTK(KERN_DEBUG "pcicc32 : No CC32 module found.\n");  | 
        ||
| 394 | |||
| 395 | return -ENODEV;  | 
        ||
| 396 |         }               | 
        ||
| 397 | |||
| 398 | switch_CC32_on(wd);  | 
        ||
| 399 | |||
| 400 |         __MOD_INC_USE_COUNT__; | 
        ||
| 401 | return 0;  | 
        ||
| 402 | } | 
        ||
| 403 | |||
| 404 | int pcicc32_release(struct inode *pInode, struct file *pFile)  | 
        ||
| 405 | { | 
        ||
| 406 | PRIVATE_DATA *pd;  | 
        ||
| 407 | |||
| 408 | DPRINTK(KERN_DEBUG "pcicc32 : pcicc32_release()\n");  | 
        ||
| 409 | |||
| 410 | if (pFile->private_data)  | 
        ||
| 411 |         { | 
        ||
| 412 | pd = (PRIVATE_DATA *)pFile->private_data;  | 
        ||
| 413 | if (pd && pd->desc)  | 
        ||
| 414 |                 { | 
        ||
| 415 | switch_CC32_off(pd->desc);  | 
        ||
| 416 | pd->desc = 0;  | 
        ||
| 417 |                 } | 
        ||
| 418 | |||
| 419 | kfree_s(pd, sizeof(*pd)); // FREE(pFile->private_data);  | 
        ||
| 420 |         } | 
        ||
| 421 | |||
| 422 |         __MOD_DEC_USE_COUNT__; | 
        ||
| 423 | return 0;  | 
        ||
| 424 | } | 
        ||
| 425 | |||
| 426 | //---------------------------------------------------------------------------- | 
        ||
| 427 | // is called at poll or select | 
        ||
| 428 | static unsigned int pcicc32_poll(struct file *pFile, poll_table *wait)  | 
        ||
| 429 | { | 
        ||
| 430 | PRIVATE_DATA *pd = (PRIVATE_DATA *)pFile->private_data;  | 
        ||
| 431 | CC32_DESCRIPTOR *wd = pd->desc;  | 
        ||
| 432 | unsigned int mask = 0;  | 
        ||
| 433 | |||
| 434 | DPRINTK(KERN_DEBUG "pcicc32 : pcicc32_poll()\n");  | 
        ||
| 435 | |||
| 436 | poll_wait(pFile, &wd->event_queue, wait);  | 
        ||
| 437 | |||
| 438 |   // return on ops that could be performed without blocking | 
        ||
| 439 | if (wd->wIrqStatus)  | 
        ||
| 440 | mask |= (POLLIN | POLLRDNORM);  | 
        ||
| 441 | |||
| 442 | return mask;  | 
        ||
| 443 | } | 
        ||
| 444 | |||
| 445 | #if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0) | 
        ||
| 446 | struct file_operations pcicc32_fops =  | 
        ||
| 447 | { | 
        ||
| 448 | NULL, /* lseek */  | 
        ||
| 449 | NULL, /* read */  | 
        ||
| 450 | NULL, /* write */  | 
        ||
| 451 | NULL, /* readdir */  | 
        ||
| 452 | pcicc32_poll, /* poll, since 2.2., replaces select */  | 
        ||
| 453 | pcicc32_ioctl, /* ioctl */  | 
        ||
| 454 | pcicc32_mmap, /* mmap */  | 
        ||
| 455 | pcicc32_open, /* open */  | 
        ||
| 456 | NULL, /* flush */  | 
        ||
| 457 | pcicc32_release,/* release */  | 
        ||
| 458 | };  | 
        ||
| 459 | #else | 
        ||
| 460 | struct file_operations pcicc32_fops =  | 
        ||
| 461 | { | 
        ||
| 462 | unlocked_ioctl : pcicc32_unlocked_ioctl, /* ioctl */  | 
        ||
| 463 | //      ioctl:   pcicc32_ioctl,         /* ioctl */ | 
        ||
| 464 | mmap: pcicc32_mmap, /* mmap */  | 
        ||
| 465 | open: pcicc32_open, /* open */  | 
        ||
| 466 | release: pcicc32_release, /* release */  | 
        ||
| 467 | poll: pcicc32_poll, /* poll */  | 
        ||
| 468 | };  | 
        ||
| 469 | #endif | 
        ||
| 470 | |||
| 471 |